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TikTok character limits for every text field

Captions take 4,000 characters in the app, but scheduled videos stop at 2,200. Bios take 80. Paste a caption below to count it.

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Checked on against 7 sources.

Count a TikTok caption

Type or paste. It stays in your browser.
Characters324 / 4,000
Hashtags3 / 5
omnisocials

omnisocials Three things we changed in our posting routine this month. 1. We film on Mondays and schedule the whole week. 2. Every video makes its point in the first 5 seconds. 3. We post at 7 PM, when our followers are most active. Which one would you try first? Tell us in the comments. #socialmediatips #contentcreator #tiktoktips

Scheduled video captions stop at 2,200 characters (TikTok's API). TikTok publishes no "more" cut.
The short answer

Captions: 4,000 in the app, 2,200 on scheduled videos. Bio: 80.

TikTok's app takes captions of up to 4,000 characters, hashtags included. The Help Center does not list that number, but it is widely documented. Scheduled videos are different: TikTok's Content Posting API caps a video caption at 2,200 characters, and every scheduler posts through it. Photo posts keep 4,000 for the description, plus a title of up to 90.

Your bio takes 80 characters, your name 30 and your username 2 to 24. Alt text on a photo post takes 300 characters per photo. The app takes up to 5 hashtags per post, a cap reported since August 2025 that TikTok has not announced, and hashtags count toward the caption.

Caption
4,000
2,200 on scheduled videos
Bio
80
Name 30, username 2 to 24
Photo title
90
Through TikTok's API
Every limit

Every TikTok text limit in one table. With where each number comes from.

TikTok character limits for video and photo captions, photo titles, bio, name, username, comments, alt text and hashtags, October 2026
FieldLimitSource
Video caption, in the app4,000 charactersWidely documented; not in TikTok's Help Center
Video caption, scheduled2,200 charactersTikTok's Content Posting API
Photo post description4,000 charactersTikTok's Content Posting API
Photo post title90 charactersTikTok's Content Posting API
Hashtags5 per post; they count toward the captionReported since Aug 2025; TikTok has not announced it
Bio80 charactersTikTok Help Center
Name (nickname)30 charactersTikTok Help Center; change it once every 7 days
Username2 to 24 charactersTikTok Help Center; letters, numbers, underscores, periods
Comment150 characters via the APITikTok's comment API; the Help Center states no number
Alt text300 characters per photoTikTok Help Center
Direct messageNot publishedNo number from TikTok
Checked on October 17, 2026. "Not published" means TikTok states no number; we leave out the guesses other guides repeat.
App vs schedulers

What the app allows, and what a scheduled post must fit. Schedulers publish through TikTok's API.

TikTok caption and title limits in the TikTok app compared with TikTok's Content Posting API used by scheduling tools
FieldTikTok appSchedulers (the API)
Video caption4,000 characters2,200 characters
Photo description4,000 characters4,000 characters
Photo titleNot published90 characters
Hashtags and mentionsPart of the captionMatched in the caption when separated by spaces or new lines
Every scheduler, OmniSocials included, publishes through TikTok's Content Posting API, so the right column is what a scheduled post must fit. OmniSocials checks video captions against 2,200 and photo captions against 4,000 before you schedule.
Tips

Write captions that get read. The first line decides.

  1. Lead with the point

    Viewers see the first lines of a caption over the video. Say what the video is about there.

  2. Stay under 2,200 on scheduled videos

    TikTok's API takes up to 2,200 characters on a video caption. Save long text for photo posts, which take 4,000.

  3. Write for search

    TikTok suggests using your description, captions and on-screen text to make clear what the video is about.

  4. Do not stuff keywords

    TikTok warns that unrelated keyword text can get a video flagged for spam. Use words that describe the video.

  5. Bio: who you are, why follow

    80 characters is one or two short lines. Say who you are and what people get from following you.

  6. Add alt text to photo posts

    Alt text describes a photo for screen readers. TikTok allows 300 characters for each photo.

Other platforms

The same guide for every network. Each one has its own rules.

Sources

How we built this guide. Checked on October 17, 2026.

Each limit comes from TikTok's Help Center or TikTok's Content Posting API reference, read on October 17, 2026. Where TikTok publishes no number, the table says "Not published" or names where the figure comes from. The 4,000-character app caption is the widely documented figure, not one TikTok's Help Center states.

  1. TikTok for Developers: Content Posting API: direct post referenceRead Oct 2026Video caption (title): up to 2,200 UTF-16 runes; hashtags and mentions are matched.
  2. TikTok for Developers: Content Posting API: photo post referenceRead Oct 2026Photo title up to 90, description up to 4,000 UTF-16 runes.
  3. TikTok Help Center: Changing account bioRead Oct 2026
  4. TikTok Help Center: Changing your nicknameRead Oct 2026
  5. TikTok Help Center: Changing your usernameRead Oct 2026
  6. TikTok Help Center: Accessibility for your videosRead Oct 2026Alt text: up to 300 characters per photo.
  7. TikTok Creator Academy: Getting discovered with Search: your questions answeredAug 2026
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